Pneumatic conveying apparatus.



I A. 0.LYNGH. PNEUMATIC CONVEYING APPARATUS. APPLICATION PILED'AUG. 7,1905.

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PATENTED AR. 27. 1906.

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Y UNITED sTATEs PATENT oEEioE ARTHUR C. LYNCH,.OF RICHMOND HILL, NEWYORK, ASSIGNOR TO STER- LING BLOWER & PIPE MANUFACTURING COMPANY, OF NEWYORK,

N. Y., A CORPORATION OF CONNECTICUT.

PNEUMATIC 'CONVEYING APPARATUS- Specification of Letters Patent IApplication filed August 7,1905. Serial No. 272,969.

Patented March 2'7, 1906.

To all whom; it may concern:

Be it known that I, ARTHUR C. LYNCH, a

' citizen of the United States, and a resident of Richmond Hill, in thecounty of Queens and State of New York, (whose post-office address isthe saine,) have invented certain new and useful Improvements inPneumatic Conveying Apparatus, of which the following is a full, clear,andconcise specification.

My invention relates to apparatus for pneu matically conveying loosematerial-such as sawdust, shavings, and similar commin'uted solidmatter-and more especially has to do with a'valved apparatus foradjusting the relative deliveries of -such material into and through twoor more branch passages; and

the invention consists in the novel arrangement and construction of theseveral parts, as will be hereinafter fully explained, and moreparticularly pointed out in the accompanying claims.

Referring to the drawings, which form a part hereof, Figure 1 is aside'elevation of a portion of a pneumatic conveying apparatus embodyingmy invention with the near side wall removed to illustrate the interiorconstruction, and Fig. 2 is a plan view of Fig. '1 with aportion of thetopwall removed.

The reference character A represents a main conveying-pipe, such as isusually'employed for carrying shavings by means of an air-blast. Thismain con uit opens into a comparatively wide and fiat conduit-section B,which is preferably rectangular in crosssection and inclined upwardly orat least pro-" vided with a bottom wall or floor A which is so inclined.At its upper end the conduit section B terminates or leads into twobranch passages C and D, which may be of equal or different sizes,according to the circum stances and purposes for which the apparatus isto be used. At the junction of the two branch assages a hinge-post E islocated, be-

ing hel in proper osition by means of the nuts shown, and t e lower endof the post where it extends below the inclined floor A carries acrank-arm F or lever, by means of which the said post may be rotated. Amovable partition G of about half the vertical height of theconduit-section B is rigidly secured to the post E, so as to be turnedtherewith when the lever F is operated, the mode of attachment beingshown herein as efiected by means of a clamp-plate G and a number ofrivets G passing therethrough and through the post E. The movablepartition G extends a suitable distance down the inclined I floor A", soas to serve as a deflector or dividing valve for the material which iscarried up the floor by the air-current. The conduitsection B is usuallyand most conveniently made of sheet material, and in order to provide auniform flat surface for the bottom edge of the dividing-valve G to rideupon the floor A of said section is reinforced underneath the path ofthe valve by means of a stiif board I-I appropriately secured thereto.

The height of the valve G is adjustable by means of an extension-plateI, which is of about the same length as the valve G and slotted, asshown in Fig. 1, whereby it may be secured to said valve differentpositions. The thumb-nuts I, secured in the plate G l and passingthrough the slots in the plate I,

serve to hold the latter plate in its adjusted position. The top wall ofthe conduit-section B is apertured above the valve and covered by aremovable hand-hole late J, whereby the extension-plate I may e reachedfor adjustment." v

In operation the shavings or other air-impelled solid particles whichpass through the main conduit A and into the inclined section B impingeagainst the inclined floor A- therea by the angular adjustment thereof,art pass-' mg into one or the other, or both, of t e branch passages,and by reason of the space left between the top of the valve G and theroof of the conduit a sufficient quantity of air is admitted to thebranch passages for adequately conveying the shavings therethroughregardless of the angular position of the said valve. The strength ofthis blast may, however, be regulated by the appropriate adjustment ofthe height of the extension I: i

As the I Having described my invention, What I claim, and desire tosecure by United States Letters Patent, is

1.. In pneumatic apparatus for conveying shavings, &c., a main conduithaving a conduit-section with a floor inclined to the direction oftravel in said main conduit and branch passages leading from the upperend thereof, in combination with a movable deflectingpartition of lessheight than said conduit-section, located nearer the said inclined floorthan to the top of the conduit-section, so as to provide a space for thepassage of air above said partition, and adapted to determine therelative deliveries of shavings into said branch passages.

2. In pneumatic apparatus for conveying shavings, &c., a main conduithaving a conduit-section with a floor upwardly inclined with respect tosaid main conduit and branch passages leading from the upper endthereof, in combination with a dividing-valve of less height than saidsection, pivoted'at the junction of the branch passages to swing overand in proximity to said inclined floor, whereby an open space is leftabove the valve for the passage of air into said branch assages.

3. In pneumatic apparatus or conveying shavings, &c., a conduit-sectionof sheet metal provided with a floor inclined inwardly to the generaltravel of said shavings, the said floor being reinforced by an exteriorstiffening member, in combination with branch passages leading from theupper end of said floor and a dividing-valve adapted to ride over saidreinforced floor and being of less height than said section, to providea space above said valve for the passage of air into the said branchpassages.

4. In pneumatic apparatus for conveying shavings, &c., a main conduithaving a section with an upwardly-inclined floor and branch passagesleading therefrom, in combination with a dividing-valve for determiningthe relative deliveries into said branch passages and means foradjusting the vertical height of said valve to regulate the relativequantities of air passing in to said branch passages.

5. In pneumatic apparatus for conveying shavings, &c., a main conduithaving a con duit-section provided with an inclined floor and branchpassages leading therefrom, in combination with a dividing-valve fordeter mining the relative deliveries into said branch passages pivotedto ride upon said inclined floor, and an extension-plate adjustablysecured to said valve for regulating the relative quantities of airdelivered into said branch passages.

In testimony whereof I have signed my name to the specification in thepresence of two subscribing witnesses.

ARTHUR O. LY N011.

Witnesses:

CHARLES NORLIN, LOUISE FIOKINGEB

